Drive connection for artificial-silk-spinning boxes



Feb. 4, 1930. BRVEAKELL r A 1,746,187

DRIVE CONNECTION FOR ARTIFICIAL SILK SPINNING BOXES Filed June 10, 1927 gmvemtozs JHMEs 5 R54 K51. z.

l+owflRD MC 0. n BRIE Patented Feb. 4, 1930 JAMEQ BREAKELI; AND HOWARD MGDOWELL LA. BRIE, OF BOANOKE, VIRGINIA,

ASSIGNOBB TO THE VISCOSE COMPANY, OF MARCUS HOOK, PENNSYLVANIA, A COB" PORATION OF PENNSYLVANIA DRIVE CONNECTION FOE ABTIFICIAL-SHJK-SPHINING BOXES Application filed June 10, 1927. Serial No. 197,867.

Our invention contemplates a readily detachable supporting and driving connection between the spinning box and its driving spindle. Our inventlon secures (1) greater surface area in the frictional drive connection; (2) a more secure engagement between the cooperating surfaces; (3) greater fa'cility in centerlng the box on the spindle;

tomatic take-up of wear between the engag-.

ing surfaces; and (5) reduced construction and up-keep costs.

Inthe accompanyin Fig. 1 is a broken si ning box and driving spindle to which our invention is applied in one form."

In the manufacture of artificial silk it is common practice to spin the silk in cake form in a rapidly rotating spinning box. The lat-.

' ter is detachably supported on a driving spindle, and when sufiicient silk has been woun or spun within the box to form the usual cake, the box is removed from the spindle and the cake doifed for further treatment ofthe silk; while the box is returned to the spindle drawing-- for further service.

To effect the drive of the spinning box it has been customary heretofore to support the box upona vertical spindle having an annul'ar flange or mushroom, lying ina plane normal to the spindle and upon which the lower end of the box hub rests. The box drive results from the frictional engagement of the mushroom with the lower face of the box hub. The area of engagement between these surfaces is so limited, however, that considerable and uncertain slippage results. insure as great an area of frictional engagement as possible, and to insure precise'axial support of the box on the spindle, 1t has been the practice to machine the engag ng surfaces to precise planity, and to exercise extreme care that t e respective planes are exactly normal to the spindle axis. Failure to so exactly locate the planes of support results m an of rotation imparted to the box, resultsin a wobbling rotation of the box, wh1ch 1s1n urious not only to the driving mechanism, but

also to the finished product spun within the box.

e elevation of a spinof the d spindle 22 above the drive head 23 and has an overall diameter substantially equal to the In order tounbalanced load, which at the very high speed preferably fitted with a metal liner 19. The

bore-18 may be closed by a spotter-plug 20 of material similar to that of the box body, but of difierent color, and preferably screwed in flush with the bottom 21 of the box chamer. I

To support and drive the box we provide the vertical spindle 22 with a drivehead 23, tapered to the incline of the taper recess 17 box hub. The drive head 23 may be integral with the spindle,-but we prefer to form. it as an independent. member integral with a projecting sleeve 24, which encases the inner diameter of the liner 19 of the bore 18 in the box hub to center and steady the box on the spindle. Any appropriate connection may be effected between the spindle 22 and the drive head member, so that they are solid with each other. We have indicated a drive fit between the parts. y f

It will be noted that the taper recess 17 is so extended that at its inner end its diameter is less than that of the adjacent end of the taperdrive head 23. Consequentlya space 25 is alforded between the inner end of the drive headand the bottom of the taper recess 17. This not only insures a snug engagement of the drive head in the taper recess, but afl'ords room for take-up between the parts incident to wear.

The upper end of the sleeve 24 is rounded, and the lower end of the liner 19 is similarly 9o rounded to facilitate theentry of the sleeve 24- into the liner 19 when the box is placed upon the spindle. The taper recess 17 itself affords a guide surface which leads the upper end of the spindle toward the axial bore 18 thereof, and thus facilitates the location of the box on the spindle when replaced after dofiing.

The present construction not only centers and steadies the box on the spindle by the 100 2 y meats? engagement of the sleeve 24 in the liner 19, but afiords a materially greater area of Erictional engagement between the taper driving head 23 and the taper recess 25 of the box 5 hub, than has been afiorded by the mushroom flanges heretofore in common use. Moreover the taper connection between the parts atfords a wedigin grip of the box hub upon the driving ea which greatly reduces the slippage between the parts. inasmuch as there is substantially no slippage, no lubrication of the drive connection is required. Exact machining of the frictionally engaged surfaces is not necessary to insure the axial location of the box since this is accurately determined by the fit of the projection 24 in the liner 19. Longer service is assured, since the taper fit between the'driving head and recess 25 automatically compensates for any wear.

The angle of the taper of drive head 23 and recess 25 may be varied, but we prefer 211g angle of from 10 to 15 as the most suita le.

25 We have found also that the uniformity of speed imparted to the spinning box by the present drive connection, has a beneficial effect upon the silk spun within the box.

While the construction illustrated in the drawing has proved excellent in service, various modifications will occur to those dealing with the matter, while still embodying the thoughts which underlie what we claim as our invention.

We claim 2-- l. A readily detachable drive connection for artificial silk spinning boxes, comprising a vertical driving spindle having a taper drive head and a centering and steadying 40 projection of substantially uniform diameter above the drive head, in combination with a box having a hub recessed to afiord a taper seat to fit the taper drive head, and a well of substantially uniform diameter in extension of said recess to receive the centering and steadying projection.

2. An artificial silk spinning box having a supporting hub recessed from its lower face to afford a taper seat and driving surface,

together with a well of substantially uniform diameter in extension of said taper seat.

In testimony whereof we have signed our names to this specification.

JES BREAKELL. HOWARD MOD. LA BRIE. 

